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Item # NNR0019

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  • Select options
  • Green, 27.2 ($199.00)
  • Green, 30.9 ($199.00)
  • Green, 31.6 ($199.00)
  • Hot Tamale, 27.2 ($199.00)
  • Hot Tamale, 30.9 ($199.00)
  • Hot Tamale, 31.6 ($199.00)
  • Moondust, 27.2 ($199.00)
  • Moondust, 30.9 ($199.00)
  • Moondust, 31.6 ($199.00)
  • Rally Blue, 27.2 ($199.00)
  • Rally Blue, 30.9 ($199.00)
  • Rally Blue, 31.6 ($199.00)
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Item # NNR0019


It will only take one ride on a Niner RDO Carbon Seatpost for you to feel the difference. Whether your ride a hardtail or a full-suspension bike, you'll notice less fatigue at the end of that ride thanks to what Niner calls the 'unstiff' carbon layup. Niner states that its monocoque design deflects up to twice as much as other leading carbon posts; in fact, it'll deflect 8.2mm under a 50kg load. For comparison's sake, Niner's standard-issue carbon posts deflects 6.3mm under the same load.

Unlike other posts that use bonding to join disparate materials, the RDO (Race Day Optimized) post is molded into a single, structurally superior shaft. Niner varies wall thickness and the carbon weave to offer the strength needed, but tunes it to flex so as to allow the post to dampen fatiguing buzz. A simple-to-adjust, two-bolt clamp ensures you'll quickly dial in the perfect saddle position, and it features an alloy head for durability.

The Niner RDO Carbon Seatpost is a zero-offset post and comes in 27.2, 30.9, and 31.6mm diameters. The 30.9 post is 370mm long, while the 27.2 and 31.6 posts are 400mm. The post comes with graphics that complement Niner's frames; Green, Moondust, Tangerine, and Red.

  • Unstiff carbon layup
  • Two-bolt clamp
  • Zero setback design

Tech Specs

carbon fiber
27.2 mm, 30.9 mm, 31.6 mm
[27.2mm, 31.6mm] 400 mm, [30.9mm] 370 mm
0 mm
Claimed Weight:
Green, 27.2: 214g
Manufacturer Warranty:
5 years
Recommended Use:
mounting biking

Reviews & Community

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Niner RDO Carbon Seatpost

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Here's what others have to say...

5 5


  • Gender: Male
  • Familiarity: I've used it several times

Light , looks great, clamping mechanics works great, actually functional as it flexes a tiny bit and absorbs some trail chatter. Perfect on my jet 9 RDO

5 5

Lives up to its reputation

  • Familiarity: I've put it through the wringer

I have a Niner MCR (steel hardtail), and added it last season. It does provide a nice little bit of flex, and helped to take a bit of the edge off. I am happy to have purchased it.

5 5

Awesome Seatpost!

  • Familiarity: I've put it through the wringer

Seatpost is great, very stiff but at the same time it gives when it needs to and absorbs a great amount of shock. Love niner equipment, wouldn't give up niner for any other brand.

4 5

Looks good, feels fine

  • Familiarity: I've put it through the wringer

I'm happy with this....shiny finish, holds the seat very securely. Easy to adjust the to & fro, tip and tilt with the two seatpost bolts. Your seat design pending, the seatpost bolts are long'ish, and could ride near the underside of your seat. Color options are a great touch with their products. I'm not running this seatpost extended very far, so the compliance is probably minimal. This component goes un-noticed, perhaps that is a sign it is well done. Four stars, as it is very pricey, did not come with carbon assembly grease (for that price, should have) and no stickers...

5 5


  • Gender: Male
  • Familiarity: I've put it through the wringer

I ride my krampus to go everywhere and its amazing what difference this seat post makes. It makes staying on the saddle much more comfortable while climbing.

Unanswered Question

When will you have a red 31.6 in stock

When will you have a red 31.6 in stock